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https://issues.apache.org/jira/browse/SPARK-31666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17150621#comment-17150621
]
Dongjoon Hyun commented on SPARK-31666:
---------------------------------------
Hi, [~hopper-signifyd]. I found what is going on there.
SPARK-23529 works correctly like the following.
{code}
# minikube ssh ls /data
SPARK-31666.txt
{code}
{code}
export HTTP2_DISABLE=true
bin/spark-submit \
--master k8s://$K8S_MASTER \
--deploy-mode cluster \
--name spark-pi \
--class org.apache.spark.examples.SparkPi \
--conf spark.kubernetes.driverEnv.HTTP2_DISABLE=true \
--conf spark.executor.instances=1 \
--conf spark.kubernetes.container.image=spark/spark:v2.4.6 \
--conf spark.kubernetes.executor.volumes.hostPath.data.mount.path=/data \
--conf spark.kubernetes.executor.volumes.hostPath.data.options.path=/data
\
local:///opt/spark/examples/jars/spark-examples_2.11-2.4.6.jar 10000
{code}
{code}
# k exec po/spark-pi-1593729363998-exec-1 -- ls /data
SPARK-31666.txt
{code}
Please see the error message `Invalid value: "/tmp1": must be unique.`. The
error message occurs because `spark-local-dir-x` is already mounted as volume
name by Spark. You should not use the same name.
{code}
20/07/02 15:38:39 INFO LoggingPodStatusWatcherImpl: State changed, new state:
pod name: spark-pi-1593729518015-driver
namespace: default
labels: spark-app-selector -> spark-74b65a9a61cc46fd8bfc5e03e4b28bb8,
spark-role -> driver
pod uid: d838532b-eaa9-4b11-8eba-655f66965580
creation time: 2020-07-02T22:38:39Z
service account name: default
volumes: spark-local-dir-1, spark-conf-volume, default-token-n5wwg
node name: N/A
start time: N/A
container images: N/A
phase: Pending
status: []
{code}
> Cannot map hostPath volumes to container
> ----------------------------------------
>
> Key: SPARK-31666
> URL: https://issues.apache.org/jira/browse/SPARK-31666
> Project: Spark
> Issue Type: Bug
> Components: Kubernetes, Spark Core
> Affects Versions: 2.4.5
> Reporter: Stephen Hopper
> Priority: Major
>
> I'm trying to mount additional hostPath directories as seen in a couple of
> places:
> [https://aws.amazon.com/blogs/containers/optimizing-spark-performance-on-kubernetes/]
> [https://github.com/GoogleCloudPlatform/spark-on-k8s-operator/blob/master/docs/user-guide.md#using-volume-for-scratch-space]
> [https://spark.apache.org/docs/latest/running-on-kubernetes.html#using-kubernetes-volumes]
>
> However, whenever I try to submit my job, I run into this error:
> {code:java}
> Uncaught exception in thread kubernetes-executor-snapshots-subscribers-1 │
> io.fabric8.kubernetes.client.KubernetesClientException: Failure executing:
> POST at: https://kubernetes.default.svc/api/v1/namespaces/my-spark-ns/pods.
> Message: Pod "spark-pi-1588970477877-exec-1" is invalid:
> spec.containers[0].volumeMounts[1].mountPath: Invalid value: "/tmp1": must be
> unique. Received status: Status(apiVersion=v1, code=422,
> details=StatusDetails(causes=[StatusCause(field=spec.containers[0].volumeMounts[1].mountPath,
> message=Invalid value: "/tmp1": must be unique, reason=FieldValueInvalid,
> additionalProperties={})], group=null, kind=Pod,
> name=spark-pi-1588970477877-exec-1, retryAfterSeconds=null, uid=null,
> additionalProperties={}), kind=Status, message=Pod
> "spark-pi-1588970477877-exec-1" is invalid:
> spec.containers[0].volumeMounts[1].mountPath: Invalid value: "/tmp1": must be
> unique, metadata=ListMeta(_continue=null, remainingItemCount=null,
> resourceVersion=null, selfLink=null, additionalProperties={}),
> reason=Invalid, status=Failure, additionalProperties={}).{code}
>
> This is my spark-submit command (note: I've used my own build of spark for
> kubernetes as well as a few other images that I've seen floating around (such
> as this one seedjeffwan/spark:v2.4.5) and they all have this same issue):
> {code:java}
> bin/spark-submit \
> --master k8s://https://my-k8s-server:443 \
> --deploy-mode cluster \
> --name spark-pi \
> --class org.apache.spark.examples.SparkPi \
> --conf spark.executor.instances=2 \
> --conf spark.kubernetes.container.image=my-spark-image:my-tag \
> --conf spark.kubernetes.driver.pod.name=sparkpi-test-driver \
> --conf spark.kubernetes.namespace=my-spark-ns \
> --conf
> spark.kubernetes.executor.volumes.hostPath.spark-local-dir-2.mount.path=/tmp1
> \
> --conf
> spark.kubernetes.executor.volumes.hostPath.spark-local-dir-2.options.path=/tmp1
> \
> --conf spark.local.dir="/tmp1" \
> --conf spark.kubernetes.authenticate.driver.serviceAccountName=spark
> local:///opt/spark/examples/jars/spark-examples_2.11-2.4.5.jar 20000{code}
> Any ideas on what's causing this?
>
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